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Current Electricity

178 Questions Start Allen Test
All Exams Allen
Q176 Allen ANALYTICAL QUESTIONS MCQ
Voltmeter of resistance $10\Omega$ and ammeter of resistance $10\Omega$ are attached in the following circuit with switches $S_{1}$ and $S_{2}$
Column-IColumn-II
(A)$S_{1}$ open, $S_{2}$ closed
(B)$S_{1}$ closed, $S_{2}$ open
(C)$S_{1}$ open, $S_{2}$ open
(D)$S_{1}$ closed, $S_{2}$ closed
(P)0, 7.5 A
(Q)50 V, 10A
(R)0, 0
(S)150 V, 0
A.
A → S, B → R, C → P, D → Q
B.
$A \to Q, B \to R, C \to P, D \to S$
C.
$A \to Q, B \to P, C \to R, D \to S$
D.
$\mathrm{A}\rightarrow \mathrm{S},\mathrm{B}\rightarrow \mathrm{P},\mathrm{C}\rightarrow \mathrm{R},\mathrm{D}\rightarrow \mathrm{Q}$
Q177 Allen ANALYTICAL QUESTIONS Match the Columns
The below table is: Match Column-I(Situration) with Column-II(Values in MKS units)
Column-IColumn-II
(A)Magnitude of electric field at (1,1,1) if potential is given by $V = -\frac{1}{x} - \frac{1}{y} - \frac{1}{z}$, is
(B)The charge flowing through a resistance 6Ω varies with t as Q = 4t - 2t2. The total heat produced in resistance till the current reach to zero.
(C)A milliammeter of range 10mA has a coil of resistance 0.99 Ω. To use it as an ammeter of range 1A, the required shunt must have a resistance of
(D)Two unlike point charges of same magnitude 10 mC are placed on x-axis at a separation of 8 cm. If both charges placed symmetrically about origin in external electric field $\vec{E}=500Vm^{-1} \hat{i}$.Then potential energy of the system may be [Assume potential energy to be zero when dipole is perpendicular to electric field]<
(P)0.4
(Q)$\sqrt{3}$
(R)0.01
(S)32
A.
A → Q, B → S, C → P, D → R
B.
A → S, B → Q, C → R, D → P
C.
A → Q, B → S, C → R, D → P
D.
A → S, B → Q, C → P, D → R
Q178 Allen ANALYTICAL QUESTIONS MCQ
Statement-1: In real battery total chemical energy lost in the battery can not be obtained at load resistance. Statement-2 : Two heaters with different resistance are connected in parallel. Higher resistance heater will glow more.
A.
If both statements are TRUE and STATEMENT 2 is the correct explanation of STATEMENT 1.
B.
If both statements are TRUE but STATEMENT 2 is not the correct explanation of STATEMENT 1.
C.
If STATEMENT 1 is TRUE and STATEMENT 2 is FALSE.
D.
If STATEMENT 1 is FALSE but STATEMENT 2 is TRUE.