Potential Dividers
 

Potential Dividers problem 18


A power supply and a solar cell are compared using the potentiometer circuit shown.




The potentiometer wire PQ is long and has a resistance of . The power supply has an e.m.f. of and the solar cell has an e.m.f. of . Which resistance must be used so that the galvanometer reads zero when ?











 

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main author and content editor: Daniel Owoyomi