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Mashutka [201]
3 years ago
7

Fill in the term that completes the statement. The north and south poles of a magnetic field produced by an electromagnet will s

witch when the direction of the changes.
Physics
2 answers:
Minchanka [31]3 years ago
6 0

Answer:

when the direction of the Current changes.

Explanation:

Electromagnet refers to an iron ore wrapped around with a coil of wire, in presence of electric current. As it acts like a magnet, when current is passed through it.

The north & south poles of magnetic fields produced by such magnet, change with direction of current passed through it.

REY [17]3 years ago
3 0

Answer:

current

Explanation:

edge2021

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Find the ratio of the lengths of the two mathematical pendulums, if the ratio of periods is 1.5​
juin [17]

Answer:

The ratio of lengths of the two mathematical pendulums is 9:4.

Explanation:

It is given that,

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Let the lengths be L₁ and L₂.

The time period of a simple pendulum is given by :

T=2\pi \sqrt{\dfrac{l}{g}}

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Where

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or

\dfrac{l_1}{l_2}=(\dfrac{T_1}{T_2})^2 ....(1)

ATQ,

\dfrac{T_1}{T_2}=1.5

Put in equation (1)

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So, the ratio of lengths of the two mathematical pendulums is 9:4.

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