Answer:
Resistance of the bulb is 2100 watts.
Explanation:
Given that,
Power of the bulb, P = 7.5 watts
Voltage, V = 125 volts
We have to find the resistance of the bulb. The power of an electrical appliance is given by the following formula as :
[tex]P=\dfrac{V^2}{R}[/tex]
[tex]R=\dfrac{V^2}{P}[/tex]
[tex]R=\dfrac{(125\ V)^2}{7.5\ W}[/tex]
R = 2083.34 ohms
or
R = 2100 ohms
Hence, the correct option is (d) "2100 ohms"
