A piece of magnetic material that retains its magnetic properties after it is removed from a magnetic field.

Physics

2 answers:

NemiM [27]2 years ago

7 0

Answer: d

Explanation: Unscrew one light, if the others remain on it is a parallel circuit.

Anna007 [38]2 years ago

5 0

Answer:

Ferromagnetic materials

Explanation:

Ferromagnetic materials are highly susceptible to an external magnetic field. They show a strong magnetic field attraction and can maintain their magnetic properties while suppressing the external field.

You might be interested in

Which graph shows an object that is dropped?

Olegator [25]

Answer:

I'm pretty sure it's the third one where velocity goes from positive to negative

Explanation:

the positive velocity is before the object hits the ground and the negative is after

8 0

2 years ago

Dark matter is missing stars that have fallen from the sky.<br> true or false

spayn [35]

Answer:

The answer to this question is False

7 0

2 years ago

A light bulb has a voltage of 36 and a current of 8 A. Calculate the resistance of the light bulb

timurjin [86]

R = U : I. U is in Voltage and I is in Ampère. That gives you R = 36 : 8 = 4,5 Ohm

4 0

2 years ago

For a wire has a circular cross section with a radius of 1.23mm.

Mila [183]

Answer:

$5.731\times 10^{-5}\ m/s$

Decrease

Explanation:

I = Current = 3.7 A

e = Charge of electron = $1.6\times 10^{-19}\ C$

n = Conduction electron density in copper = $8.49\times 10^{28}\ electrons/m^3$

$v_d$ = Drift velocity of electrons

r = Radius = 1.23 mm

Current is given by

$I=neAv_d\\\Rightarrow v_d=\dfrac{I}{neA}\\\Rightarrow v_d=\dfrac{3.7}{8.49\times 10^{28}\times 1.6\times 10^{-19}\times \pi (1.23\times 10^{-3})^2}\\\Rightarrow v_d=5.731\times 10^{-5}\ m/s$