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a 25 resistor, a 55 resistor, and a 75 resistor are connected in parallel and placed across a 9.0battery.
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a 25 resistor, a 55 resistor, and a 75 resistor are connected in parallel and placed across a 9.0battery.

a 25 resistor, a 55 resistor, and a 75 resistor are connected in parallel and placed-example-1
User Madhuka Harith
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1 Answer

7 votes
a) Equivalent Resistance= (1/25+1/55+1/75)^-1=14.0ohms(3s.f.)
b) Current=9.0V/14.0=0.644A(3s.f.)
c) Current through 25-resistor=9/25=0.360A
Current through 55-resistor=9/55=0.164A
Current through 75-resistor=9/75=0.120A
All answers are rounded off to 3 significant figures
User Marchica
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