## Question

*A *and *B* are two points on a uniform metal ring whose centre is *C*. The angle . *A* and *B *are maintained at two different constant temperatures. When the rate of total heat flow from *A* to *B* is 1.2 W. When this rate will be:

### Solution

1.6 W

Let * R* = total thermal resistance of the ring

For two sections of resistance *R*/2 each are in parallel. So equivalent resistance = *R*/4.

Rate of total heat flow

or

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