Question

An bulb is marked as 60w and 200V
a)Find the current across the bulb?
b)Find the resistance of the circuit?​

Answer 1

Given :-

An bulb is marked as 60w and 200V

To Find :-

a)Find the current across the bulb?

b)Find the resistance of the circuit?​

Solution :-

1] Current

We know that

P = VI

60 = 200(I)

60/200 = I

6/20 = I

0.3 = I

2] Resistance

R = V²/P

R  = (200)²/60

R = 40000/60

R = 666.67 Ω

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Answer 2

Answer:

Given :-

An bulb is marked as 60w and 200V

To Find :-

a)Find the current across the bulb?

b)Find the resistance of the circuit?​

Solution :-

1] Current

We know that

P = VI

60 = 200(I)

60/200 = I

6/20 = I

0.3 = I

2] Resistance

R = V²/P

R  = (200)²/60

R = 40000/60

R = 666.67 Ω