The Student Room Group

Combination circuit

A power source used in the workshop has an EMF of 110V. When a load is applied the PD at the terminals drops to 95V when a current of 3A is drawn. Calculate the internal resistance of the power source in a combination circuit

Reply 1

V = E - Ir
95 = 110 - 3r
3r = 110 - 95
3r = 15
r = 5 Ohms

Reply 2

R u in First Year for A-levels? Do u do a level physics?
Cause I'm in the first year doing physics, double maths and chem

Reply 3

Original post by intishar24082007
R u in First Year for A-levels? Do u do a level physics?
Cause I'm in the first year doing physics, double maths and chem

Yes mate, home studying tho. So trying to juggle this course work and work nightmare

Reply 4

Original post by Adam thomas
Yes mate, home studying tho. So trying to juggle this course work and work nightmare

What course work is it?
(edited 1 year ago)

Reply 5

Original post by Adam thomas
A power source used in the workshop has an EMF of 110V. When a load is applied the PD at the terminals drops to 95V when a current of 3A is drawn. Calculate the internal resistance of the power source in a combination circuit

Btw bro was this correct

Reply 6

Original post by intishar24082007
Btw bro was this correct

Yes mate all
Sorted ✔️

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