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Ghella [55]
4 years ago
11

Pls with a clear explanation

Physics
1 answer:
Molodets [167]4 years ago
7 0

Explanation:

We know that :

P  =  \frac{V^{2} }{R}

Resistance of Bulb :

R =  \frac{ V^{2} }{P }  =   \frac{ {(240)}^{2} }{280}  = 205.71 \: ohms

As per Ohms laws :

Current when (V = 200)

i \:  =  \frac{ V}{ R}  =  \frac{200}{205.71}  = 0.97 \: A

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