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A 6V battery of negligible internasl res...

A `6V` battery of negligible internasl resistance is connected across a uniform wire `AB` of length `10 cm`. The positive terminal of another battery of emf `4 V` and internal resistance `1Omega` is joined to the point A as shown in figure. Take the potentail at B to be zero.

a. What are the potential at the ponts `A` and `C`?
b. At which point `D` of the wire `AB`, the potential is equal to the potential at `C`?
c. If the points `C` and `D` are connected by a wiere, what will be the current through it ?
d. If the `4V` battery is replaced by `7.5 V` battery, what would be the answer of parts (a) and (b)?

Text Solution

Verified by Experts

The correct Answer is:
(a) 6 V, 2V
(b) `AD=200/3=66.7cm`,
( c) zero
(d) 6 V,-1.5, no such point D exists.
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