Question

What is the resistance of an electric lamp which is attached with a 200 volt supply and a drawn current of 50 A?

Answer 1

Answer :

Potential difference = 200V

Current flow = 50A

We have to find resistance of electric lamp$.$

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◈ As per ohm's law, current flow through a conductor is directly proportional to the applied potential difference.

• V ∝ I

Resistance of conductor depends on length of conductor, area of cross section and temperature.

• V = IR

; R denotes resistance of conductor

⇒ V = I × R

⇒ 200 = 50 × R

⇒ R = 200/50

⇒ R = 4Ω

Cheers!

Answer 2

Given :-

• Current = 5 Ampere.

• Potential Difference = 200 Volts.

To Find :-

• Resistance Of an electric lamp.

Solution :-

As per Ohm's Law, We know that,

V = IR.

Here,

V = Potential Difference.

R = Resistance.

I = Current.

So, Put the values.

➝ 200 = 50 × R.

➝ 50R = 200.

➝ R = 200/50.

➝ R = 4.

✔ Hence, Resistance = 4Ω ✔