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Electric Circuits
At a particular instant of the cardiac cycle, p is located at the midpoint of a line connecting two electrodes that are 50 cm apart, and p is parallel to that line. At that instant the magnitude of the potential difference between the electrodes is 1.5 mV and the potential change within the cells has magnitude 90 mV.
(a) What is the magnitude of p? considering Electrical conductivity as
(a) What is the magnitude of p? considering Electrical conductivity as
Electric Circuits
prove the following boolean rule using truth tables
(A+B).(A+C)\=A+BC
(A+B).(A+C)\=A+BC
Electric Circuits
An electric irob of resistance 20 ohm draws a current of 5 amperes calculate the heat produced in 30 seconds
Electric Circuits
The battery in a circuit has emf of 50V . The current in the lamp is 2A and the reading on the voltmeter is 30V.
Calculate the internal resistanse of the battery and the resistance of the lamp.
Calculate the internal resistanse of the battery and the resistance of the lamp.
Electric Circuits
Circuit protection schemes include the following except __________.
Electric Circuits
two positive charges each 4.18μC,and negative charge -6.36μC,are fixed at verticles of an equilateral triangle of side 13cm.Find the electric force on the negative chrage.
Electric Circuits
Design a basic band pass filter comprising of a series combination of a T-section high pass
filter and a T-section low pass filter to pass the frequencies between 10 kHz and 100 kHz.
Take K = 100 for HPF and K = 400 for LPF. (10)
filter and a T-section low pass filter to pass the frequencies between 10 kHz and 100 kHz.
Take K = 100 for HPF and K = 400 for LPF. (10)
Electric Circuits
from a top view perspective, and with the currents polarity reversed in what direction does the north pole of the compass needle point to when the compass was positioned around the vertical current carrying straight conductor
Electric Circuits
16 In the circuit diagram shown, the device marked X is a -----------------
Click here to see exhibit
rheostat
voltmeter
jockey
galvanometer
17 The null condition in potentiometer experiment shows that
the potential difference under test is zero
current is varying in the circuit
potential differences are varying in the circuit
potential difference are balanced
18 The potentiometer wire plays equivalent role of which of these devices in a circuit?
rheostat
thermostat
galvanometer
ammeter
19 The advantage of potentiometer over voltmetr in measurements of emf is that
the potentiometer wire is assumed to be uniform
it does not draw current from the circuit under test
the temperatue of the wire must remain constant
faults may arise due to breaks or wrong connections in the circuit
Click here to see exhibit
rheostat
voltmeter
jockey
galvanometer
17 The null condition in potentiometer experiment shows that
the potential difference under test is zero
current is varying in the circuit
potential differences are varying in the circuit
potential difference are balanced
18 The potentiometer wire plays equivalent role of which of these devices in a circuit?
rheostat
thermostat
galvanometer
ammeter
19 The advantage of potentiometer over voltmetr in measurements of emf is that
the potentiometer wire is assumed to be uniform
it does not draw current from the circuit under test
the temperatue of the wire must remain constant
faults may arise due to breaks or wrong connections in the circuit
Electric Circuits
1 The potentiometer wire plays equivalent role of which of these devices in a circuit?
rheostat
thermostat
galvanometer
ammeter
2 The advantage of potentiometer over voltmetr in measurements of emf is that
the potentiometer wire is assumed to be uniform
it does not draw current from the circuit under test
the temperatue of the wire must remain constant
faults may arise due to breaks or wrong connections in the circuit
3 Which of these is not a useful precaution in an electrical experiment?
key should be removed between readings to avoid battery run-down
jockeys should be dragged on resistance wires
the connections in the circuit should be tight
readings should be recorded as soon as they are obtained
4 Which of the following is NOT true about a rheostat?
It is a constant current instrument
It is a resistor with moving contact
It is used for varying the current in a circuit
It is used for varying the resistance in a circuit
rheostat
thermostat
galvanometer
ammeter
2 The advantage of potentiometer over voltmetr in measurements of emf is that
the potentiometer wire is assumed to be uniform
it does not draw current from the circuit under test
the temperatue of the wire must remain constant
faults may arise due to breaks or wrong connections in the circuit
3 Which of these is not a useful precaution in an electrical experiment?
key should be removed between readings to avoid battery run-down
jockeys should be dragged on resistance wires
the connections in the circuit should be tight
readings should be recorded as soon as they are obtained
4 Which of the following is NOT true about a rheostat?
It is a constant current instrument
It is a resistor with moving contact
It is used for varying the current in a circuit
It is used for varying the resistance in a circuit
