Answer: Solor cycles and tings
Answer:
Resistance will become 4 times the previous value
Explanation:
We have given current in the circuit i = 2.4 A
According to ohm's law current in the circuit is given by
So ............eqn 1
Now voltage is increased to 4 times so new voltage = 4 V
And current in the circuit is same as 2.4 A
We have to fond the resistance so that after increasing voltage current will be same
So ..........eqn 2
Dividing eqn 1 and 2
So resistance will become 4 times the previous value
Answer:
A.C. Generator
Explanation:
The device designed to convert chemical energy into kinetic energy is an A.C generator.
The generator uses fuel to cause the mechanical motion of the pistons in the device.
- Chemical energy is a form of energy found between the bonds of compounds and molecules.
- When the bonds are broken, energy is released.
- The heat energy produced drives pistons and cause mechanical motion of the body.
- This is a form of kinetic energy which causes the motion of a body.
If they are connected exactly as shown, nothing can happen.
Answer:
As per Coulomb's law we know that force between two charges is given as
F = \frac{kq_1q_2}{r^2}F=
r
2
kq
1
q
2
here we know that
q_1 = 2.5 \times 10^{-6} Cq
1
=2.5×10
−6
C
q_2 = -5.0 \times 10^{-6} Cq
2
=−5.0×10
−6
C
r = 0.0050 mr=0.0050m
now from above formula we will have
F = \frac{(9 \times 10^9)(2.5 \times 10^{-6})(5 \times 10^{-6})}{(0.0050)^2}F=
(0.0050)
2
(9×10
9
)(2.5×10
−6
)(5×10
−6
)
F = 4500 NF=4500N
so they will attract towards each other as they are opposite in nature with force F = 4500 N