Measurement and Instrumentation
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is

 1.5 V.
 1 V.
 1.7 V.
 1.34 V.

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Measurement and Instrumentation
It can be stated that

CT operates with considerably lower flux density than a PT
CT operates at almost the same flux density as a PT
No generalisation can be made with regard to the flux densities in CT and PT
CT operates with a higher flux density than PT

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