Two Long Parallel Wires Carry Currents of 20 a and 5.0

question 50

Multiple Choice

Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions.The wires are separated by 20 cm.At what point between the two wires do they produce the same strength magnetic field?

• A)4.0 cm from the 20 A wire
• B)8.0 cm from the 20 A wire
• C)12 cm from the 20 A wire
• D)16 cm from the 20 A wire
• E)18 cm from the 20 A wire

---

Definitions:

Tchebysheff's Theorem

A theorem that provides a minimum bound on the proportion of values that lie within a certain number of standard deviations from the mean for any distribution.

Empirical Rule

The rule in statistics where for any normal distribution, practically all of the data is expected to be within three standard deviations from the mean value.

Empirical Rule

A statistical principle that asserts in a normal distribution, almost all data points are contained within three standard deviations from the average.

Tchebysheff's Theorem

Tchebysheff's theorem provides a bound on the probability that a random variable deviates from its mean, regardless of the distribution's shape, for any number of standard deviations.