Chapter 13 Current Electricity Physics 12th Class Punjab MCQ Tests
12th Class Physics Chapter 13 MCQ Tests
Chapter 13 of 12th Class Physics has 30 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 30
Total Marks: 30
Time: 30 Mins
Total Questions: 30
Total Marks: 30
Time: 30 Mins
30Min : 00 Sec Remaining
Question # 1
A platinum wire has resistance of 10Ω at 0° C and 20Ω at 273° C. What will be the value of temperature coefficient of resistance of platinum?
Question # 2
Why the terminal potential difference of a battery decreases when the current drawn from it is increased?
Question # 3
The image shows the current I vs voltage V graph for a length of resistance wire. Where can the Ohm's law be applied to the wire?
Question # 4
A heater coil is cut into two parts and only one part is now used in heater. What will happen to the heat generated now?
Question # 5
We have 2 bulbs. The specifications of bulb A are 450 W, 210 V, and that of bulb B are 50 W, 210 V. Which one of these has higher filament resistance?
Question # 6
A car battery is of 12 volts. 8 simple cells connected in series can give 12 volts. Why such cells are not used in starting the car?
Question # 7
A wire of resistance R is stretched till its length is increased m times its original length. What will be the new resistance R′?
Question # 8
Which of the following statements is correct about the circuit in image?
Question # 9
Why a filament bulb doesn't obey Ohm's law?
Question # 10
3 equal resistors are connected in series across a source of emf, that dissipates power of 12 watt. What will be the power dissipated if same resistors are connected in parallel with the same source of emf?
Question # 11
What is the ratio of power consumed in the two resistors connected in series, as shown in image?
Question # 12
An ordinary bulb is marked 50 watt and 220 volt. What is its resistance?
Question # 13
What is resistance with tolerance of the resistor shown in image?
Question # 14
What is the resistance with tolerance of the resistor shown in image?
Question # 15
Rheostat can also be used in which of the following ways?
Question # 16
If E is emf of a battery, then what will be the potential drop across terminals if an external resistance R = r (r is internal resistance) is connected across it?
Question # 17
A 110 W and 30 W bulb are connected in series with a 220 V supply. What will be the net power consumed?
Question # 18
In the given circuit, if R1 > R2 , then which of the following statements is true about power dissipation?
Question # 19
Which of the following factors will increase the resistance of a wire in a circuit?
Question # 20
Why the resistance of a conductor rises with temperature?
Question # 21
How can the presence of electric current be detected?
Question # 22
How much energy is converted in a resistor of 5Ω carrying a current of 2.0 A for 10 seconds?
Question # 23
Which of the following graphs best represents how current I varies with voltage V in a component in which resistance increases as the current increases?
Question # 24
In the image, which resistor has the value of 4700Ω?
Question # 25
Why is it easier to start a car engine on a warm day than a cold day?
Question # 26
Why is the element of a heater very hot while the wires carrying current are cold?
Question # 27
The resistance of a wire is 1Ω, then what will be the new resistance if the length of wire is doubled?
Question # 28
From the following situations, when is it possible that the potential difference may get greater than the emf of a battery?
Question # 29
3 resistances of 3Ω each are connected in such a way that net resistance is 2Ω , then which of the following statements is true?
Question # 30
What are the charge carriers in electrolyte?
Total Questions
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Question # 1
A platinum wire has resistance of 10Ω at 0° C and 20Ω at 273° C. What will be the value of temperature coefficient of resistance of platinum?
Question # 2
Why the terminal potential difference of a battery decreases when the current drawn from it is increased?
Question # 3
The image shows the current I vs voltage V graph for a length of resistance wire. Where can the Ohm's law be applied to the wire?
Question # 4
A heater coil is cut into two parts and only one part is now used in heater. What will happen to the heat generated now?
Question # 5
We have 2 bulbs. The specifications of bulb A are 450 W, 210 V, and that of bulb B are 50 W, 210 V. Which one of these has higher filament resistance?
Question # 6
A car battery is of 12 volts. 8 simple cells connected in series can give 12 volts. Why such cells are not used in starting the car?
Question # 7
A wire of resistance R is stretched till its length is increased m times its original length. What will be the new resistance R′?
Question # 8
Which of the following statements is correct about the circuit in image?
Question # 9
Why a filament bulb doesn't obey Ohm's law?
Question # 10
3 equal resistors are connected in series across a source of emf, that dissipates power of 12 watt. What will be the power dissipated if same resistors are connected in parallel with the same source of emf?
Question # 11
What is the ratio of power consumed in the two resistors connected in series, as shown in image?
Question # 12
An ordinary bulb is marked 50 watt and 220 volt. What is its resistance?
Question # 13
What is resistance with tolerance of the resistor shown in image?
Question # 14
What is the resistance with tolerance of the resistor shown in image?
Question # 15
Rheostat can also be used in which of the following ways?
Question # 16
If E is emf of a battery, then what will be the potential drop across terminals if an external resistance R = r (r is internal resistance) is connected across it?
Question # 17
A 110 W and 30 W bulb are connected in series with a 220 V supply. What will be the net power consumed?
Question # 18
In the given circuit, if R1 > R2 , then which of the following statements is true about power dissipation?
Question # 19
Which of the following factors will increase the resistance of a wire in a circuit?
Question # 20
Why the resistance of a conductor rises with temperature?
Question # 21
How can the presence of electric current be detected?
Question # 22
How much energy is converted in a resistor of 5Ω carrying a current of 2.0 A for 10 seconds?
Question # 23
Which of the following graphs best represents how current I varies with voltage V in a component in which resistance increases as the current increases?
Question # 24
In the image, which resistor has the value of 4700Ω?
Question # 25
Why is it easier to start a car engine on a warm day than a cold day?
Question # 26
Why is the element of a heater very hot while the wires carrying current are cold?
Question # 27
The resistance of a wire is 1Ω, then what will be the new resistance if the length of wire is doubled?
Question # 28
From the following situations, when is it possible that the potential difference may get greater than the emf of a battery?
Question # 29
3 resistances of 3Ω each are connected in such a way that net resistance is 2Ω , then which of the following statements is true?
Question # 30
What are the charge carriers in electrolyte?
Total Questions
123456789101112131415161718192021222324252627282930
Physics MCQ Test by Topics
- +13.1 Electric Current
- +13.1 Current Direction
- +13.1 Current Through a Metallic Conductor
- +13.2 Source of Current
- +13.3 Effects of Current
- +13.3 Heating Effect
- +13.3 Magnetic Effect
- +13.3 Chemical Effect
- +13.4 Ohms Law
- +13.4 Review of Series and Parallel Combination of Resistors
- +13.5 Resistivity and its Dependence Upon Temperature
- +13.6 Colour Code for Carbon Resistances
- +13.6 Rheostat
- +13.6 Thermistors
- +13.7 Electrical Power and Power Dissipation in Resistors
- +13.8 Electomotive Force (EMF) and Potentail Difference
- +13.8 Maximum Power Output
- +13.9 Kirchhoffs Rules
- +13.9 Kirchhoffs First Rule
- +13.9 Kirchhoffs Second Rule
- +13.9 Procedure of Solution of Circuit Problems
- +13.10 Wheatstone Bridge
- +13.11 Potentiometer
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