A Positive Point Charge Q Is Placed at the Center

question 50

Multiple Choice

A positive point charge q is placed at the center of an uncharged metal sphere insulated from the ground.The outside of the sphere is then grounded as shown.Then the ground wire is removed.A is the inner surface and B is the outer surface.Which statement is correct?

• A)The charge on A is −q;that on B is +q.
• B)The charge on B is −q;that on A is +q.
• C)The charge is on A and on B.
• D)There is no charge on either A or B.
• E)The charge on A is −q;there is no charge on B.

---

Definitions:

Alpha

Often denoted as α, it is a significance level used in hypothesis testing, representing the probability of rejecting a true null hypothesis.

Alpha

A term often associated with the significance level in hypothesis testing, indicating the probability of rejecting a true null hypothesis.

Type II Error

The error occurs when the null hypothesis is not rejected when it is actually false.

Null Hypothesis

The null hypothesis is a statement in statistical inference that suggests there is no significant effect or no difference, serving as the default assumption to be tested.