Physics-
General
Easy
Question
The variation of potential difference across A and C with time can be represented as:
The correct answer is:
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i) 
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ii) constant 
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iii) constant 
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i) constant (at high pressure)
ii) constant (at intermediate pressure)
iii) constant (at low pressure)
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The potential difference across inductor VL is:
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Physics-General
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The variation of current in the inductor with time can be represented as:
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The current i L is
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The figure shows variation of R X and X L C with frequency f in a series L, C, R circuit Then for what frequency point, the circuit is inductive
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Physics-General
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When an ac source of emf 
sin
is connected across a circuit, the phase difference between the emf e and the current i in the circuit is observed to be 
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When an ac source of emf sin is connected across a circuit, the phase difference between the emf e and the current i in the circuit is observed to be , as shown in the diagram If the circuit consists possibly only of RC or LC in series, find the relationship between the two elements
Physics-General
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When an AC source of emf E = E0 Sin (100t) is connected across a circuit, the phase difference between the emf E and the current I in the circuit is observed to be , as shown in the figure If the circuit consists only of R– C(or)R–L(or) L–C series Possible values of the elements of the circuit are
When an AC source of emf E = E0 Sin (100t) is connected across a circuit, the phase difference between the emf E and the current I in the circuit is observed to be , as shown in the figure If the circuit consists only of R– C(or)R–L(or) L–C series Possible values of the elements of the circuit are
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1 g of a metal required 50 mL of 0.5 N HCl to dissolve it The equivalent mass of the metal is:
1 g of a metal required 50 mL of 0.5 N HCl to dissolve it The equivalent mass of the metal is:
Chemistry-General
Physics-
If the reading of the voltmeters vary with time AS:
sin
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If the reading of the voltmeters vary with time AS: sin and then the unknown circuit element x is a:
a) pure (or ideal) inductor
b) practical inductor
c) pure (or ideal) capacitor
d) practical capacitor
Physics-General
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When two A.C generators of emfs V1 and V2 and same frequency connected in series, the emf across A and B is ( 
= phase angle difference between the generators):
When two A.C generators of emfs V1 and V2 and same frequency connected in series, the emf across A and B is ( = phase angle difference between the generators):
Physics-General
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A combination of elements is enclosed in a black box and the voltage and currents are measured across this black box The expression for applied voltage; and the current flowing in it is 
were 
rad/sec Then the wrong statement is:
A combination of elements is enclosed in a black box and the voltage and currents are measured across this black box The expression for applied voltage; and the current flowing in it is were rad/sec Then the wrong statement is:
Physics-General
