Ohms Law

Front

Unit of electric current

Back

Ampere (A)

Answer explanation

The unit of electric current is Ampere (A).

Front

Symbol for electric current?

Back

I

Answer explanation

The symbol for electric current is I. It represents the flow of electric charge in a circuit.

Front

Unit of resistance?

Back

Ohm (Ω)

Answer explanation

The unit of resistance is Ohm (Ω).

Front

Symbol for resistance

Back

R

Answer explanation

The symbol for resistance is 'R'. It represents the opposition to the flow of electric current in a circuit.

Front

Force causing electrical current flow

Back

Electromotive force

Answer explanation

The force that causes electrical current to flow is called electromotive force (EMF).

Front

Ohm's law: relationship between current, voltage, and resistance.

Back

Directly proportional

Answer explanation

According to Ohm's law, current and voltage are directly proportional to each other when resistance is constant.

Front

Emf of 10V applied to 20Ω resistance.

Back

0.5 A

Answer explanation

The current flowing through a resistance is equal to the applied voltage divided by the resistance. In this case, the current is 10 volts divided by 20Ω, which equals 0.5 A. Therefore, the correct answer is 0.5 A.

Front

Emf: 50V, Current: 5A. Find resistance.

Back

10Ω

Answer explanation

The resistance of the circuit can be calculated using Ohm's law: resistance = voltage / current. In this case, the resistance is 50 volts / 5 amperes = 10Ω. Therefore, the correct choice is 10Ω.

Front

Total resistance of R1 (2Ω), R2 (5Ω), R3 (8Ω), R4 (3Ω) in series.

Back

18Ω

Answer explanation

The total resistance of series resistors, is calculated by adding all the resistances together. In this case, R1 + R2 + R3 + R4 = 2Ω + 5Ω + 8Ω + 3Ω = 18Ω. Therefore, the correct answer is 18Ω.

Front

Potential across 23Ω with 10A current

Back

50 V