Question

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Answer 1

Answer:

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Answer 2

Answer:

R = 968 ohm

(a) P = 41.32

(b) I = 0.206 A

Step-by-step explanation:

We are given,

Power(P) = 50W

Voltage provided(V) = 220V

We know that,

P = VI ---- 1

I = V/R ---- 2

Putting eq.2 in eq.1

P = V(V/R)

P = V²/R

so,

R = V²/P

Now,

R = 220²/50

R = (220 × 220)/50

R = 968 ohm

(a) Now, we must know that, the Resistance of a material is always constant it can't be changed due to Current of Voltage.

Here, Voltage is dropped to 200V

P = V²/R

P = 200²/968

P = (200 × 200)/968

P = 40000/968

P = 41.32 W

We know that,

P = VI

so,

I = P/V

I = 41.32/200

I = 0.206 A

Hope it helped and you understood it........All the best