A battery has an emf of 15V and internal resistance of 1
. Is the terminal to terminal potential difference less than, equal to or greater than 15V if the current in the battery is (1) from negative to positive terminal, (2) from positive to negative terminal (3) zero current?
a)
Less, grater, equal
b)
Less, less, equal
c)
Greater, greater, equal
d)
Greater, less, equal
A battery has an emf of 15V and internal resistance of 1 . Is the terminal to terminal potential difference less than, equal to or greater than 15V if the current in the battery is (1) from negative to positive terminal, (2) from positive to negative terminal (3) zero current?
a)
Less, grater, equal
b)
Less, less, equal
c)
Greater, greater, equal
d)
Greater, less, equal
Question ID - 151043 | SaraNextGen Top Answer
A battery has an emf of 15V and internal resistance of 1 . Is the terminal to terminal potential difference less than, equal to or greater than 15V if the current in the battery is (1) from negative to positive terminal, (2) from positive to negative terminal (3) zero current?
a)
Less, grater, equal
b)
Less, less, equal
c)
Greater, greater, equal
d)
Greater, less, equal
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A battery has an emf of 15V and internal resistance of 1 |
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|
a) |
Less, grater, equal |
b) |
Less, less, equal |
|
c) |
Greater, greater, equal |
d) |
Greater, less, equal |
|
(a) If E is the emf of the battery, r the internal resistance, i the current drawn and V the PD across the plates of battery, then
Case I When the direction of current in the battery is from –ve to +ve or outside +ve to –ve, then
V<E Case II When the direction of current in the battery is form +ve to –ve or outside –ve to +ve, then
Case III When zero current, then
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(during discharging)
(during discharging)
V>E
