Home › UP Board Class 12 › Physics › Current Electricity › If two identical slabs are joined end to end, th…
If two identical slabs are joined end to end, the combined resistance is:
AHalf of R
BSame as R
CFour of R
DTwice R
Answer & Solution
Correct answer: D. Twice R
1. Joining end to end doubles the length of the path.
2. Doubling the length doubles the resistance.
3. So the combination has twice the resistance.
4. The answer is twice R.
_Source: NCERT Class 12 Physics, Ch 3 'Current Electricity'_
Related questions
The reactance of a capacitor $C$ at frequency $f$ in an a.c. circuit is:A bird perched on a single high voltage wire is unharmed because:The two conservation laws embodied in Kirchhoff's rules are conservation of:The resistance offered by the cell itself is called:Which device detects the current in a Wheatstone bridge?In a Wheatstone bridge, the source is connected across the:The Wheatstone bridge is made up of how many resistors?At a junction, the current entering equals the current: