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IP A 75-W lightbulb operates on a potential difference of
Chapter 21, Problem 32P(choose chapter or problem)
Problem 32P
IP A 75-W lightbulb operates on a potential difference of 95 V. Find
(a) the current in the bulb and
(b) the resistance of the bulb,
(c) If this bulb is replaced with one whose resistance is half the value found in part
(b), is its power rating greater than or less than 75 W? By what factor?
Questions & Answers
QUESTION:
Problem 32P
IP A 75-W lightbulb operates on a potential difference of 95 V. Find
(a) the current in the bulb and
(b) the resistance of the bulb,
(c) If this bulb is replaced with one whose resistance is half the value found in part
(b), is its power rating greater than or less than 75 W? By what factor?
ANSWER:
Step 1 of 5
(a)
Here we need to find the current through the bulb which operates at power on a potential difference of .
Given data,
Power,
Voltage,
To find,
Current,