Question

Find Voltage of the Circuit
An alternator of a car draw six amperes when connected to load of 3 ohm, find voltage of the circuit. a. 25V b. 18V c. 16V d. 20V

Answer 1

25 V Is The Answer.....................

Answer 2

The voltage of the circuit is 18V.

Option(b) is the correct answer.

Given:

An alternator of a car draws six amperes of current(I) when connected to a load of 3 ohms (resistance).

To Find:

The voltage of the circuit.

Solution:

We are required to find the voltage of the circuit.

The voltage, current, and resistance relation is given as

V = I×R  --------(1)

Equation(1) is known as ohm's law.

• Ohm’s law states that the voltage across a circuit is directly proportional to the current flowing through it, provided all physical conditions and temperatures remain constant.

Current, I = 6 A

Resistance, R = 3 ohm

By substituting the values of current and resistance in equation(1) we get

Voltage, V = 6×3

Voltage, V = 18 Volt

Therefore, The voltage of the circuit is 18V.

Hence, Option(b) is the correct answer.

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