If an electric circuit has 30ohms and 10amps. How many volts the battery voltmeter should read?
1 answer:
Answer:
<em>The battery voltmeter should read 300 Volt</em>
Explanation:
<u>Ohm's Law</u>
It states that the current through a conductor is directly proportional to the voltage applied to it and inversely proportional to the resistance of the conductor. This relationship can be written as
Solving for V
V=IR
The electric circuit has a resistance of 30 ohms and carries a current of I=10 A, thus the voltage is:
V = 10 A * 30 Ohm
V = 300 Volt
The battery voltmeter should read 300 Volt
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Answer:
a
This a closed system because the mass of the system is conserved
The energy system that undergoes change is the Potential energy system
The energy system diagram is shown on the first uploaded image
b
Work done = Change in gravitational potential energy
So solving algebraically for work done would be
Work done =
where m is mass
g is acceleration due to gravity
and h is the height
c
Work done in terms of force and distance is = mg
where m is mass of bucket and
g is acceleration due to gravity
Explanation:
a) At the start, potential and kinetic energy were zero. so, energy is zero.
As the person pulls the bucket up, the potential energy becomes mgh.
so,final energy will be consisting of only potential energy.
B) Here work done is equal to change in gravitational potential energy.
W =
W = m*g*h
where g = 9.9 m/
C) Work = force * distance
mgh = force * h
force = mg
force = weight of bucket
