Answer: 600Ω
Step-by-step 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