Answer:
The angle other than 90 degrees would result in magnetic flux of non zero magnitude.
Explanation:
The magnetic flux through a given closed area is equal to 
.
Where 
is the magnitude of magnetic flux through loop .
is the area vector of the given loop .
We know that = 
,
Where 
is the angle made by magnetic field with area vector.
Area vector of a closed loop is always normal to the plane of the loop .
So from above equation we can deduce that
is the magnitude of magnetic flux which is non zero when not equal to 90 degrees.
Answer:
Since it us the resistance that causes the power output, it might be intuitive to think that more resistance produces more power but as P=I^2 * R one actually needs high current and low resistqnce. That means 75 W has lower resistance and higher current.
Now you may think that making the resistance very low, one gets the most power. Not so, as the circuit has wires, power source etc. All the have their resistance. In theory one gets the maximum power over a resistor when the resistor is half of the total resistance of the circuit. This in practice would be inefficient as one would lose half of the total power elsewhere. In practice circuits have fuses that limit the current and one gets the maximum power at the current the fuse is rated to. So if there is 20 A fuse, the maximum power is 2400 W and the corresponding resistance 6 ohm.
Answer:
.004 Hz
Explanation:
Frequeny is cycles per second. An oscillation is 1 cycle
F=cycles/sec
4/100
=0.004Hz (Hz- Hertz=1 cycle/sec)
Answer:
Explanation:
Potential difference between two points in constant electric field is given by the formula
here we know that
also we know that
now we have
now change in potential energy is given as
Ticker Tape analysis is a common way of analyzing the motion of the objects to perform in the physics laboratory. A long tape is attached to a moving object and threaded through a device that places a tick upon the tape at regular intervals of time. This ticker tape can also determine if the object is fast or slow. It can also reveal if the object is moving with a constant velocity or accelerating. The changing velocity and acceleration represented by the changing distance between dots in the ticker tape. And also the constant velocity and therefore no acceleration represent the constant distance between dots.
