1A. What is the minimum number of 50 ohm resistors required to produce an equiva

Question

1A. What is the minimum number of 50 ohm resistors required to produce an equivalent resistance of 13 ohms or less?

resistors.


1B.
A B C D
A removed * on on on
B removed on * on off
C removed off off * off
D removed on off on *

i.) If a given electron passes through C, it must also pass through:
ii.) If a given electron passes through B, it must also pass through:
iii.) If a given electron passes through B, it will NOT pass through:


For i, ii, and iii the options are:

A only
B only
D only
More than one of the above
None of the above

Explanation / Answer

If four 50 ohm resistances are connected in the parallel combination, the resultant resistance is given by (1/R) = (1/50 ohm) + (1/50 ohm) + (1/50 ohm) + (1/50 ohm) = 4(1/50 ohm) R = 12.5 ohm So atleast we require four 50 ohm resistances in order to get equivalent resistance of 13 ohms or less.

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