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Electric Circuits
a voltmeter coil has resistance 50ohm and resistor of 1.15 K ohm is connected in series. it can read potential differences upto 12 volts. If the same coil is used to costruct an ammeter which can measure current up to 2A, what should be the resistance of the shunt used?
Electric Circuits
A 2240 - Ω resistor and a 1.3 - μF capacitor are connected in series across a generator (60.0 Hz, 120 V). Determine the power delivered to the circuit.
Electric Circuits
a dry cell when short-circuited will furnish about 30 amperes for a brief time. If its emf is 1.5 volts, ehat is its internal resistance? an ordinary household electric lamp takes about 1 amp will it be safe to connect it directly to the dry cell? Why?
Electric Circuits
what is the carrier frequency generated by a tank circut is?
Electric Circuits
If a certain silver wire has a resistance of 6.00 V at 20.0°C,
what resistance will it have at 34.0°C?
what resistance will it have at 34.0°C?
Electric Circuits
A portion of Nichrome wire of radius 2.50 mm is to be used
in winding a heating coil. If the coil must draw a current of
9.25 A when a voltage of 120 V is applied across its ends,
find :
(a)the required resistance of the coil.
(b) the length of wire you must use to wind the coil.
in winding a heating coil. If the coil must draw a current of
9.25 A when a voltage of 120 V is applied across its ends,
find :
(a)the required resistance of the coil.
(b) the length of wire you must use to wind the coil.
Electric Circuits
you are giiven a number of 10 ohm resistors is capable of dissipating only 1.0 W without being destroyed . what is the minimum number of such resistors that you need to combine in series or parallel combinations to a 10 ohm resistor that is capable of dissipating at least 5.0 W ? Draw the circuit diagram showing the arrangement you propose to achieve the above result?
Electric Circuits
hey, what is 2+2 I am stuck.,
Electric Circuits
explaination why the alarm produce sound when the thermistor is high resistance ?
Electric Circuits
why is the terminal voltage of the cell less than it's emf ?
