<u>Answer</u>: The potential difference across the resistor is 12 volts.
<u>Explanation:</u>
To calculate the potential difference cross the resistor, we use Ohm's Law. This law states that the potential difference across two wires is directly proportional to the current flowing through that wire.
Mathematically,
Where,
V = potential difference = ?V
I = Current flowing = 1.2 A
R = Resistor = 
Putting values in above equation, we get:
Hence, the potential difference across the resistor is 12 volts
Answer:
The magnetic force on a current-carrying wire is perpendicular to both the wire and the magnetic field with direction given by the right hand rule.
Answer
rate of current = (1/x) mph
Explanation
let the distance from <span>Greentown to Glenavon be y miles and the rate of current be x mph.
y = (15+x)g
y = 15g+gx .........................................(1)
The distance from </span><span>Glenavon to Cambria = (y-2)
y-2 =(15-x)g
y-2 = 15g-gx
y = 15g - gx + 2 ....................... (2)
equation equation (1) and (2)
15g + gx = 15g - gx + 2
2gx = 2
dividing by 2g both sides we get,
x = 1/2g mph
</span>
Since the lemon is falling without any air resistance, the only force acting on the lemon is the acceleration due to gravity.
But, since we know that the lemon is falling with a constant speed. There has to be another unknown force to balance the gravitational force. Which has been shown in the freebody diagram
Answer:2987.7 J
Explanation:
Given
sled weight is 
Tension in rope 
Time interval 
velocity of sled 
here speed is equal to velocity which is constant therefore acceleration is zero
thus 
Distance traveled in
considering surface to be friction less
thus 
will do work on sled
