Answer:
The emf and internal resistance of the battery are 9 volt and 2.04 Ω
Explanation:
Given that,
First resistor
Power
Second resistor
Power
We need to calculate the emf and internal resistance
Using formula of emf
For first resistor
....(I)
For second resistor
.....(II)
From equation (I) and (II)
Using component of dividend rule
Now, Put the value of internal resistance in equation (I)
Hence, The emf and internal resistance of the battery are 9 volt and 2.04 Ω
Answer:
The answer is c) same.
Explanation:
When a force is applied at some point on a rigid body, the body makes a rotational movement about the axis. Said property of the force applied to rotate the body is calculated with a magnitude known as torque, which is defined as the moment of force at a capacity of that force to make a rotation around a specific point.
for case 1, the magnitude of the torque is equal to:
τ = F*(L/2)
For case 2, the torque magnitude equals:
τ = F*sin(30°) = F*(L/2)
It can be seen that in both cases it is the same torque.
Either of them is. 1/(the other one). That's 'C' .
Three practical uses of electromagnets would be
Light. The waves
Electric locks. The bolts that are used by the
coils
Cranes. The electric ones that are found in
scraps
Cars computers washing machines all use
Electromagnets . Even CD players DVDs
Players
Displacement = distance and direction from the start-point
to the end-point, regardless of the route followed on the way.
From the throw to the 'plop', the displacement is 5 meters down.
