Questions
Two sources of emf 6 V and internal resistance and are connected to an external resistance R as shown. If potential difference across battery A is zero, then value of R is
detailed solution
Correct option is A
I = 125+R ; V =−Ir=06−125+R×3=0 ⇒ R=1 ΩTalk to our academic expert!
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An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of (4/3) and (2/3), then the ratio of the currents passing through the wires will be
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