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MCQ Questions for CBSE Class 12 with Answers
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Electric Current
1.
According to Ohm's Law, current equals the voltage divided by the _________.
Resistance
Power
Inductance
Capacitance
2.
What is electrical current?
The rate at which electrical energy is transferred
The potential difference between two points in an electric circuit
The flow of electric charge
All of the above
3.
What is the unit of measurement for electrical current?
Ampere
Volt
Coulomb
Watt
4.
What letter is used to represent current in an electrical diagram or formula?
c
i
v
e
5.
What is the standard unit of measurement for electrical charge?
Volt
Ampere
Coulomb
Watt
6.
If you have a 12 Volt battery placed across a 6 Ohm resistor, what will the current be?
2 Amps
0.5 Amps
1 Amp
4 Amps
7.
If you place a 50 Volt power source across a 10 Ohm resistor, what will the current be?
0.5 Amps
2 Amps
5 Amps
1 Amp
8.
If the current is 2 Amps and the voltage is 8 Volts, what is the power?
6 Watts
10 Watts
16 Watts
4 Watts
9.
What do we call current that only flows in one direction?
DC current
AC current
10.
What do we call current that constantly changes direction?
AC current
DC current
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