What is the mechanical advantage of a ramp that has an effort force of 3 N but a resistance force of 12 N?
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a cell sends a current through a resistance R for time t.
Now the same cell sends current throughanother resistance r for the same time.
If same amount of heat is developed in both the resistance, then the internal resistance of cell is
1) (R+r)/2
2) (R-r)/2
3)(Rr)/2
4) (Rr)1/2
Now the same cell sends current throughanother resistance r for the same time.
If same amount of heat is developed in both the resistance, then the internal resistance of cell is
1) (R+r)/2
2) (R-r)/2
3)(Rr)/2
4) (Rr)1/2
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