84. Two tangent galvanometer A and B are identical in construction, except for the number of turns in the coil. They are connected in series and a current is sent through them. The deflection in A is 45° and that in B is 30°. Calculate the ratio of the number of turns in the two galvanometer. 85. 86. na дв (Hint : [Ans. √√3:1] A coil of tangent galvanometer having diameter 16 cm is set up in magnetic meridian. When current of 0.8 A is passed through the coil, the magnetic needle is deflected through 45°. Find the length of the wire in the coil. Also find the reduction factor of tangent galvanometer. (B. = 2 × 10-¹5 Wb/m², μ = 4 × 10-7 Wb/Am) tan 0 A = tan 0 B ) [Ans.: 1.6 m, 0.8 A] A current of 0.2 A passed through a tangent galvanometer produces a deflection of 30°. Find a current which will produce a deflection of 60°. [Ans.: 0.6 A]
84. Two tangent galvanometer A and B are identical in construction, except for the number of turns in the coil. They are connected in series and a current is sent through them. The deflection in A is 45° and that in B is 30°. Calculate the ratio of the number of turns in the two galvanometer. 85. 86. na дв (Hint : [Ans. √√3:1] A coil of tangent galvanometer having diameter 16 cm is set up in magnetic meridian. When current of 0.8 A is passed through the coil, the magnetic needle is deflected through 45°. Find the length of the wire in the coil. Also find the reduction factor of tangent galvanometer. (B. = 2 × 10-¹5 Wb/m², μ = 4 × 10-7 Wb/Am) tan 0 A = tan 0 B ) [Ans.: 1.6 m, 0.8 A] A current of 0.2 A passed through a tangent galvanometer produces a deflection of 30°. Find a current which will produce a deflection of 60°. [Ans.: 0.6 A]
Chapter7: Electricity
Section: Chapter Questions
Problem 13Q: (Indicates a review question, which means it requires only a basic understanding of the material to...
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Q85
![oted
dial
stant
at of
P]
= 10
492.
C₂.
C.G.
71
100
y of
full
heter
iv]
ngth
ies a
ar to
twist
Nm/
0⁰]
.8
0 mA
vanometer has a current sensitivity of 5 divisions/
mA and a voltage sensitivity of 2 divisions/mV. If the
instrument has 30 divisions, how will you use it to
measure (a) a current of 3 amperes? (b) a voltage of 15
volts? [Ans.: Shunt 0.005 ohm; Series 2497.5 ohm]
Two tangent galvanometer A and B are identical in
construction, except for the number of turns in the
coil. They are connected in series and a current is sent
through them. The deflection in A is 45° and that in B is
30°. Calculate the ratio of the number of turns in the
two galvanometer.
na
tan 0 A
(Hint:
tane B
)
[Ans.: √3:1]
nB
A coil of tangent galvanometer having diameter 16 cm
is set up in magnetic meridian. When current of 0.8 A
is passed through the coil, the magnetic needle is
deflected through 45°. Find the length of the wire in the
coil. Also find the reduction factor of tangent
galvanometer.
(B. = 2 x 10-5 Wb/m², μ = 4 x 10-7 Wb/Am)
[Ans.: 1.6 m, 0.8 A]
A current of 0.2 A passed through a tangent galvanometer
produces a deflection of 30°. Find a current which will
produce a deflection of 60°.
[Ans.: 0.6 A]
10.4 Biot-savart's Law
87.
Two long parallel current carrying conductors are
REDMI 9 PRIME part in air and carry currents 5A and 10A
A
A
respectively. Calculate the force per meter on each
wire if curran
d in
opposite
84.
85.
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Transcribed Image Text:oted
dial
stant
at of
P]
= 10
492.
C₂.
C.G.
71
100
y of
full
heter
iv]
ngth
ies a
ar to
twist
Nm/
0⁰]
.8
0 mA
vanometer has a current sensitivity of 5 divisions/
mA and a voltage sensitivity of 2 divisions/mV. If the
instrument has 30 divisions, how will you use it to
measure (a) a current of 3 amperes? (b) a voltage of 15
volts? [Ans.: Shunt 0.005 ohm; Series 2497.5 ohm]
Two tangent galvanometer A and B are identical in
construction, except for the number of turns in the
coil. They are connected in series and a current is sent
through them. The deflection in A is 45° and that in B is
30°. Calculate the ratio of the number of turns in the
two galvanometer.
na
tan 0 A
(Hint:
tane B
)
[Ans.: √3:1]
nB
A coil of tangent galvanometer having diameter 16 cm
is set up in magnetic meridian. When current of 0.8 A
is passed through the coil, the magnetic needle is
deflected through 45°. Find the length of the wire in the
coil. Also find the reduction factor of tangent
galvanometer.
(B. = 2 x 10-5 Wb/m², μ = 4 x 10-7 Wb/Am)
[Ans.: 1.6 m, 0.8 A]
A current of 0.2 A passed through a tangent galvanometer
produces a deflection of 30°. Find a current which will
produce a deflection of 60°.
[Ans.: 0.6 A]
10.4 Biot-savart's Law
87.
Two long parallel current carrying conductors are
REDMI 9 PRIME part in air and carry currents 5A and 10A
A
A
respectively. Calculate the force per meter on each
wire if curran
d in
opposite
84.
85.
86.
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