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3 years ago

PLLLLLLZ HELP 15 POINTS

Physics

1 answer:

amid [387]3 years ago

8 0

<h2>Option A is the correct answer.</h2>

Explanation:

A 10-ω resistor and a 30-ω resistor are connected in series across a 100-V battery

Total resistance = 10 + 30 = 40 ω

We have

Voltage = Current x resistance

100 = I x 40

I = 2.5 A

In series current in all the resistors are same, that is 2.5 A

Voltage in 10ω resistor, V = I x 10 = 2.5 x 10 = 25 V

In parallel connection potential in all the resistors are same.

Voltage in 10ω resistor, V = 100 V

The ratio of the potential difference across the 10-ω resistor in the series combination to that of the 10-ω resistance connected in parallel = 25/100 = 1/4

Option A is the correct answer.

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