3 years ago

A table lamp draws a current of 200 mA when it is connected to a 120-V source. What is the resistance of the table lamp?

Physics

1 answer:

Nitella [24]3 years ago

7 0

Answer: 600Ω

Explanation:

Voltage of source (V) = 120 Volts

Current drawn by table lamp (I) = 200mA

(Since 1 mA = 1 x 10^-3A

200mA = 200 x 10^-3A)

Resistance of table lamp (R)= ?

Then, apply the formula for ohms law

Voltage = Current x resistance

i.e V = I x R

120V = 200 x 10^-3A x R

R = 120V / 200 x 10^-3A

R = 600Ω (Ω is the symbol for ohms)

Thus, the resistance of the table lamp is 600Ω

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