A cheap voltmeter with an internal resistance of `30Omega` is connected to the terminals of a battery whose internal resistance is `5Omega` and true emf 1.5 V. What would be the terminal voltage as read by the voltmeter?
1 Answers
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A battery of emf 6 volts and internal resistance `1Omega` is connected in parallel to another battery of emf 8V and internal resistance `2Omega`. The
Correct Answer - `5/8`A
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An ammeter and a voltmeter are connected in series to a battery of emf 6V. When a certain resistance is connected in parallel with the voltmeter, the
Correct Answer - `n:1,((E)/(n+1))=2V`
2 Answers 1 views
A solenoid having a resistance of `5Omega` and self-inductance of 4H is connected to a battery of emf 10V and negligible resistance. After how long wi
Correct Answer - 0.555s
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A wire of resistance `5Omega` is connected to a battery of emf 2V and internal resistance `1Omega` (a) How much energy is transferred from the chemica
Correct Answer - 80J, 66.7j, the rest is lost as heat in internal of the battery.
2 Answers 1 views
A dynamo of emf `varepsilon_(1)=120V` and internal resistance `r=0.5Omega`, and a storage battery of `varepsilon_(2)=110V` are connected to an extenal
Correct Answer - `5.5Omega, if R gt 5.5 Omega "the battery will be changed and if" R lt 5.5Omega` the battery will be discharged.
2 Answers 1 views
An inductor with an inductance of 2.5H and a resistance of `8Omega` is connected to the terminals of a battery with an EMF 6V and negligible internal
Correct Answer - `(a) 2.40 A//s (b) 0.80 A//s (c )0.413 A (d) 0.750 A`
2 Answers 1 views
The terminals of a battery of emf 3 V and internal resistance `2.5Omega` are joined to the diagonally opposite corners of a cubical skeleton frame of
Correct Answer - 0.6A
2 Answers 1 views
The potential differnce between the terminals of a battery of emf 6.0 V and internal resistance `1 Omega` drops to 5.8 V when connected across an exte
Correct Answer - `29 Omega`
2 Answers 1 views
When a resistance of `2 Omega` is placed across the terminals of a battery, the current is 0.5 A. When the resistance across the terminals of the batt
Correct Answer - `1.5 V, 1 Omega`
2 Answers 1 views
A 20 V battery of internal resistance `1 Omega` is connected to three coils of `12 Omega, 6 Omega` and `4 Omega` in parallel, a resistor of `5Omega` a
Correct Answer - `1.2 A, 0.2 A, 0.4 A, 0.6 A, 18.8 V, 10.4 V`
2 Answers 1 views