Explanation:
It is given that,
Resistance, R = 20 ohms
Voltage of the battery, V = 10 V
We can find current flowing through the circuit using Ohm's law as follows :
V = IR
It can be seen from the Ohm's law, that the current is directly proportional to the voltage. It means that if the battery is replaced by a battery that provides a larger voltage, the current through the circuit will be more than 0.5 A i.e. it increases.
According to Lenz’s law, the induced current itself creates a magnetic field to oppose the change in the external magnetic field.
Using the right hand rule, the clockwise current creates a magnetic field vertically downward.
By Lenz’s law, the created magnetic field points downward in response to...
if the external magnetic field points upward and is increasing in strength...
or points downward and is decreasing in strength.
We are told the external field is increasing in strength, so its direction must be vertically upward.
Answer:
h1/h2 =
Explanation:
Using two rolls of tissue paper : One roll dropped normally while the other drops as some holds onto a sheet of the toilet paper ( I.e. the tissue paper drops rotating about its axis )
<u>Determine the ratio of heights h1/h2</u>
mass of tissues = same
radius of tissues = same
h1 = height of tissue 1
h2 = height of tissue 2
<em>For the first tissue ( Tissue that dropped manually ) </em>
potential energy = kinetic energy
mgh = 1/2 mv^2
therefore the final velocity ( v^2 ) = 2gH ----- ( 1 )
<em>second tissue ( Tissue that dropped while rotating ) </em>
gh = ( 3 + ) ------ ( 2 )
To determine the ratio of heights we will equate equations 1 and 2
hence :
gh = ( 3 + )
∴ h1/h2 =