Question

Question 12 1 pts If 0.5 amps of current are measured in a circuit with a light bulb connected to a 120 volts outlet, what is the resistance of the filament in the light bulb? See O 240 watts O 60 watts 0 240 ohms 0 60 ohms 1 pts

Answer 1

Question 12

According to Ohms law, the value of Resistance is given by formula:

R = V/l

Where R=resistance

V = voltage across the resistance

I = current across the resistance

As given in the problem:

I = 0.5 amp , V = 120 volts

So,

R = 120/0.5

R = 240 ohms

Therefore, option C is correct R = 240 ohms

Question 13

Power is given by the formula:

P = l²R

Where, P is power in watts

I is current and R is Resistance

As we know from above problem

I = 0.5 amp , R = 240 ohms

So,

P = (0.5)²×240

P = 60 watts

Therefore, Option A is correct , power is 60 Watts.