Question

A current of 0.2 A flows through a conductor of resistance of 4.5 ohm. Calculate the p.d. at the ends of the conductor.

Answer 1

Current = 0.2 A
Resistance = 4.5 ohm

Since p.d is voltage we use the formula
V=I×R
V= 0.2 × 4.5
= 0.9 volts

Answer 2

Given:

• An conductor has a resistance of 4.5 ohm and draws a current of 0.2 A.

Need to find:

• The required Voltage in conductor = ?

Solution:

According to the Ohm's Law:

⋆ Voltage = Current (I) × Resistance

Putting the values,

➜Required Voltage = 0.2 × 4.5

➜ Required Voltage = 0.9 volts

Therefore,

The required Voltage in conductor is 0.9 volts.

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